Answer: A. Categorized as organic failure to thrive.
Explanation: Failure to thrive is used to describe a condition when a child seems to be undernourished such that the child fails to meet the expected growth standard required of the child's age. Failure to thrive could result when a child doesn't receive enough nutrient ( Exogenous or inorganic cause) or inability to process nutrient( endogenous or organic cause).
In the scenario above, the child is suffering from endogenous or organic failure to thrive due to physical deficiency or defect in the child. Sarah's case was caused by intestinal defect leading to her inability to absorb food or nutrient.
